Foto: Wohnhaus der SolarCity

Specification for biomass heating systems for buildings with low energy demand

The aim of this project was to develop specifications for biomass heating systems for buildings with a low energy demand. The focus was on multi-family residential buildings and office buildings.

Content Description

Status

finished

Summary

The aim of this project was to develop specifications for biomass heating systems for buildings with a low energy demand. The focus was on multi-family residential buildings and office buildings.

Some of the issues involved had to be described with technical parameters. An analysis of biomass heating systems already on the market was performed, and specifications have been developed for future biomass heating systems which will meet the requirements that have emerged in the course of the project.

The project also involved social issues, including an investigation of the opinions and attitudes of the users of the heating systems.

A multi-disciplinary team of engineers and sociologists was formed to carry out the work programme: market analysis, a user survey (tenants, housing companies and persons responsible for the heating systems), the analysis of the energy demand in the two types of building and the definition of specifications. Energy experts, manufacturers of heating systems and housing companies were integrated in the project through workshops.

The specifications established by the project are:

  • High automation and operational safety, low noise and dust emissions to be achieved
  • Optimisation of efficiency and emissions to be achieved under operating conditions when the heat demand of the building is 30% below the peak heat demand, taking into account 'stop and go' operation mode
  • Ratio of burning period to interval period to be minimised by a buffer store
  • Warm water production during the summer to be covered by other energy sources (e.g.solar energy)
  • Suitability for different fuels to be developed
  • Concept for cost effective series production of standard components to be developed

Research requirements were defined as follows:

  • Development of multifuel heating systems
  • Development of new concept for heating system design related to partial load operation
  • Development of measuring programme for efficiency and emissions at partial load capacity
  • Simple algorithm for the planning of optimised buffer stores

Project Partners

Project manager: Dipl.-Ing. Kurt Könighofer
JOANNEUM RESEARCH Forschungsgesellschaft mbH, Institut für Energieforschung
Partner: Expertise biomass heating systems:
Dipl.-Ing. Dr. Reinhard Padinger
JOANNEUM RESEARCH Forschungsgesellschaft mbH, Institut für Energieforschung

Simulation of building's energy demand:
Ao. Univ.-Prof. Dipl.-Ing. Dr. Wolfgang Streicher
Dipl.-Ing. Thomas Mach
Technische Universität Graz, Institut für Wärmetechnik

User survey:
Mag. Jürgen Suschek-Berger
Interuniversitäres Forschungszentrum für Technik, Arbeit und Kultur (IFZ)

Contact

Dipl.-Ing. Kurt Könighofer
JOANNEUM RESEARCH Forschungsgesellschaft mbH
Institut für Energieforschung
Elisabethstrasse 5
A8010 Graz
Tel.: +43 316 876-1338
Fax: +43 316 876-1320
PC-Fax: +43 316 8769-1338
E-Mail: kurt.koenighofer@joanneum.ac.at

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